Abstract

This study evaluated antioxidant capacity, nutritional and phytochemical content of shells and roots of peanut (Arachis Hypogaea L.) for potential utilizations. Total dietary fiber, protein, ash and alkaloid per 100 g dry weight samples ranged from 58.8 to 78.2 g, 5.8 to 6.1 g, 6.6 to 21.7 g and 5 to 23.8 g, respectively. While total phenolic, total saponins and phytic acid per 100 g dry weight samples ranged from 175 to 431 mg tannic acid equivalent, 10.8 to 23.4 mg and 108 to 159 mg, respectively. Peanut roots exhibited the highest total dietary fiber, phytochemical content and the highestα,α-diphenyl-β-picrylhydrazyl (DPPH) radical scavenging activity.

Key words: Arachis hypogaea L, peanut shell, peanut root, total dietary fiber, phytochemical, antioxidant.

Abbreviation

PRoot,Peanut roots of Menglembu variety; Menglembu PS, peanut shells of Menglembu variety; Shandong PS, peanut shells of Shandong variety; TAE,tannic acid equivalent.